Preserving apparatus.



J. L. MAULDIN.

PBESERVING APPARATUS.

APPLICATION FILED DEO.1, 1910.

1 57 567 Patented Apr. 1, 1913.

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IJNITED STATES PATENT oration. j 7

JAMES L. ivmutnin, or 1'.'E a;.. ;tm0, s re grotn's ELECTRIC: MEATCURING COMPANY, or CLEVELAND, OHIO, A CORPORATION or MAINE. I

rsasmv easmmrus.

To all whom it may concern: i I

Be it known thatfI, JAMES'IJ. MAULDIN, a citizen of the United States,residing at Cleveland, in the county of'Cuyahoga and Stateof Ohio, haveinvented a certain new and useful'Improvement in Preserving Ap-'paratus, of which the'following is a full, clear,-and exact description,reference being had to the accompanying drawings.

In the preserving'of meat, or other sub-; stances, by soaking the samein brine, the preserving action is hastened bypassing an electriccurrent through the brine and sub stances. Such electric current tendsto heat the brine and it has been found necessary to artificially coolit to counteract this heat The object of this invention is to provide asimple and eflicient means for'cooling the 20 brine directly in thecuring tank, and furthermore, for agitating the brine so that fresh,cool brine is continuously presented to the substance being cured.

I accomplish the aboveobject by-providing a cooling coil in the coolingtank and means for causing the brine to circulate in the tank so that auniform low temperature is maintained. I cause this circulation boththermodynamically and mechanically. That is to say, I arrange my coolingcoils within the tank so that the cooling action thereof on theimmediately adjacent brine tends to cause the same to circulate in theup and down course within the-tank, and furthermore, I provide apropeller within the tank causing such brine to circulate longitudinallyin the tank. The result of these operations is that the variousparticles of the brine are successively presented to the cool-.

ing coil and-successively presented to the substance being cured, sothat a uniform temperature of brine is maintained and the substancebeing cured is constantly sura suitable longitudinal tank; B rackstherein, one surmounting another, and C pieces J "Specification ofLetters Patent. I

D and D repre'sent'sets of electrodes in the tank, which are terminalsof lines E and E supplying electric current passing through the tank.This current may be direct- "01 alternating, as desired, though,'if'direct current is used,'suitable means must be provided for preventingthe contamination due to electrolysis. I have illustrated at F analternating current'generator for supplying current'passing through thebrine and substance being cured.

"To cool the brine and substance being cured I provide withinthe tank Asuitable coils G, G of pipe adapted to carry cooling medium as, forexample, compressed ammonia gas. I locate these coils along the upperportion of the sides of the tank. Their tendency is to cool the brineimmediately adjacent to them, and such cold brine accordingly descends,causing an upward current of brine intermediately of the tank, so thatthe brine circulates within thetank in a continuous course downwardlynear the sides of the tank and upwardly near the center, as indicated bythe arrows in Fig. 3. To further agitate and circu- PatentedAprJlQilQilE. Application filed'December 1, 1910. Serial No. 595,074.

late the brine, I provide, near one end of the tank, a suitablepropeller which is adapted to be suitably rotated. As shown,

the shaft J of this propeller is the armature v shaft of a suitablemotor K mounted outside the tank, such shaft extending through a watertight stufiing box L. The rotation of this. propeller shoves forwardlythe brine 1 near the central portion of the tank. causing it to returnalong paths near the sides, as illustrated by the arrows in .Fig. 20.The result of the twocourlses of circulation described is to cause thebrine to travel diagonally upwardly and lengthwise of the' tank at thecentral portion and downwardly and lengthwise in the opposite directionalong the cooling pipes. Accordingly, all portions of the brine arepresentedto the cooling pipes and these pipes are thereby adapted totake up the heat caused by the passage of electric current and maintainthe brine uniformly cool and the cooled brine, circulating rapidlyacross the substance being cured, maintains it at the propertemperature.

The cooling pipes Gr have their outer walls of some substance which isanon-conductor for the electric current. The pipe may be entirely of anon-metallic substance, as glass or porcelain, but to endow the pipeswith the requisite strength to withstand breakage and also-to enablethem to take up the heat rapidly, I prefer to make them of metallicsubstance with a thin vitrified coating as, for example, porcelainizediron.

Having thus described my invention what I claim is 1. In an apparatusfor preserving, the combination, of a tank, cooling coils within thetank arranged on opposite sides thereof and confined to the upperportion of such sides to not only 0001 the medium but to circulate it,and racks between the coils.

2. In a preserving apparatus, the combination of a tank, coils ofcooling pipe on opposite sides of the tank, surmounting trays betweenthe coils, and a rotary propeller near one end ofthe tank beyond thetrays.

3. In a preserving apparatus, the combination of a tank, intermediatelylocated racks therein adapted to sustain the articles to be preserved, apropeller within. the tank beyond the racks, a motor for the propelleron the outside of'the tank, and a driving connection between the motorand propeller. 4

4. In a preserving apparatus,-the combination of a tank, intermediately{located racks therein adapted to carry the articles to be preserved,coils of cooling pipe on the upper portion of opposite sides of thetank, a propeller within the tankvnear one end,

and means for rotating the propeller.

In testimony whereof, hereunto aflix my signature in the resence of twowitnesses. AMES LPMAULDIN Witnesses:

ALBERT HJBATES,

BRENNAN B. WEST.

